You saw ripples of bubbling water from the water beneath you while fishing in the Aquarium Ruins. A Giant Shark then came leaping out the water, narrowly missing you as it then transformed into the bipedal Shark himself, Leviathan as he landed behind you and said "Hey, I got ya good didn't I. Either way, I'm up for a fight as I have some new tricks I wanna use~." He taunted a little